I don’t think the electricity authorities are too keen about unqualified people being in meter rooms, for safety reasons. There is also a security risk from mischievous interference with settings.
If there is any incident in the building that necessitates access to this area, it should be attended to by a licenced electrician.
Perhaps the cleaner could be given a more appropriate area to store his spare light bulbs. Likewise, if painting or tiling is impeded by electrical installations, perhaps a LE should also be involved?